Large Expandable Controller Module

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Our largest expandable machine controller built for maximum i/o customization


The ESX.3xl is a highly customizable control unit from STW built for use in harsh mobile applications. This controller provides up to 65 software-configurable inputs and outputs due to the modular design. With 14 optional expansion boards to choose from, this off-highway rated controller is ready to meet the needs of any mobile machine OEM at any scale. It also supports a multitude of programming environments such as C, logi.CAD, CODESYS, and MATLAB.


The base version, with 52 inputs and outputs, provides 4 CAN interfaces and 1 RS232 serial interface. Additional CAN or RS232 interfaces, as well as other communication interfaces like Ethernet or USB can be added easily.


The ESX-3XL provides up to 136 software-configurable inputs and outputs. Due to the modular design, 72 of the 136 inputs and outputs are customizable and can be configured for any application.
Connections Summary:
  • Up to 136 I/O
  • 2 x 81 Pin Sealed Automotive Connectors
  • IP67 Environmental Rating
  • 4 Status LEDs (2 System, 2 User)


The processor system of the ESX-3XL, based on the powerful TriCore TC1796 from Infineon, is clocked at 150 MHz and is backed by 4 MB of RAM and 6 MB of Flash. A buzzer for audio alarms, and system and user LEDs for diagnostics help troubleshoot the system without the need for any special software tools.


The ESX-3XL is freely programmable in CoDeSys (version 3.x), in the ‘C’ Language, or with a Matlab/Simulink support package. All of the inputs, outputs and communications port are fully accessible and configurable through extensive BIOS libraries.
  • C with API Library (SIL2 safety features available)
  • CoDeSys v3 (SIL2 safety features available)
  • Matlab/Simulink


The system is designed for safety-related applications according to SIL2/ISO 61508. Safety features are controlled by a separate, independent microcontroller. Safety functions are available both in CoDeSys and in the C programming language. A complete safety manual is available along with the extensive help files that fully document the ESX-3XL hardware and software.
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